Wristwatch



FIG. 1 is a front elevational view of a wristwatch showing my new design;

FIG. 2 is a bottom plan view thereof, the top plan being a mirror image;

FIG. 3 is a right side elevational view thereof; and,

FIG. 4 is a left side elevational view thereof. 

The ornamenal design for a wristwatch, as shown and described. 